Linked Questions
10 questions linked to/from You have one question to tell whether the number I'm thinking of is 1, 2, or 3
10
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6
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Guess a number between 1 to 27 with 3 Yes/No/Maybe questions [duplicate]
Your best friend (Bob) comes to you with this problem.
The Problem
His teacher (Mr. Sam) will ask Bob to work out a number in his head between 1 and 27.
Bob has to find the correct number, by asking ...
-2
votes
4
answers
443
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What's my number? [duplicate]
I am thinking of an integer $1,2$ or $3$. You can ask me only a single question to which I can reply "Yes", "No" or "I don't know". I will be completely honest. What will you ask me to figure out what ...
1
vote
2
answers
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Thinking of O or 0 or O [duplicate]
I am thinking of one thing.
It is either an ellipse (shape),
Or, it is the letter O
Or, it is the number 0
You can ask me one question and guess what the thing is.
I can only answer No,or ...
29
votes
3
answers
5k
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Differentiate between the numbers from 1 to 5 with one single yes/no question
This question requires a bit of logical distortion to get the information required to answer the question.
However, I've never seen it asked before what would happen if more modes of question ...
3
votes
15
answers
15k
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Three doors, one question
A prisoner wakes up in an empty room (being seated on the floor against the wall). There are three solid doors on three of the room's walls: one to his left, one in the middle in front of him and one ...
7
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8
answers
1k
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Thinking of a shape
This is on a similar thought process as a 2 year old puzzle on this site: You have one question to tell whether the number I'm thinking of is 1, 2, or 3
I am thinking of a shape.
It is either a ...
7
votes
3
answers
1k
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Gaby and Jack's Number Guessing Game
Gaby, a good mathematician, thinks of a whole number between 1 and 100 inclusive. What is the least number of questions Jack needs to ask her, and what questions should those be, if he is to work out ...
3
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4
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581
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Classic 2 Guards But With 3 Doors Instead
So the rules are almost the same :
You get to ask just one question to whichever guard you want to (just 1 guard; asking both guards is not allowed)
There are 2 guards, one tells the truth and ...
0
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2
answers
560
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Is there probability based Knight-Knave puzzles?
Have you seen Knight-Knave puzzles based on probability rather then facts?
For example a puzzle with condition like this: Knight tells the answer, probability to which according to his knowledge is ...
0
votes
6
answers
275
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Guessing among 3 possibilities with a single question - can this be done with letters as well as numbers?
This is an open question to all.
I have seen a few " I am thinking of a number/s-- can you guess by asking one question to which I can only answer Yes, No or may be" puzzles which are interesting ...